static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx) { underrun_test(buf, len, 0); #ifndef _WIN32 if (test_mode == PPM_BENCHMARK) ppm_test(len); #endif }
static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx) { underrun_test(buf, len, 0); if (ppm_benchmark && !ppm_running) { ppm_clock_init(); ppm_running = 1; return; } if (ppm_benchmark) { ppm_test(len); } }
int main(int argc, char **argv) { #ifndef _WIN32 struct sigaction sigact; #endif int n_read, r, opt, i; int sync_mode = 0; uint8_t *buffer; int dev_index = 0; int dev_given = 0; uint32_t out_block_size = DEFAULT_BUF_LENGTH; int count; int gains[100]; while ((opt = getopt(argc, argv, "d:s:b:tp::Sh")) != -1) { switch (opt) { case 'd': dev_index = verbose_device_search(optarg); dev_given = 1; break; case 's': samp_rate = (uint32_t)atof(optarg); break; case 'b': out_block_size = (uint32_t)atof(optarg); break; case 't': test_mode = TUNER_BENCHMARK; break; case 'p': test_mode = PPM_BENCHMARK; if (optarg) ppm_duration = atoi(optarg); break; case 'S': sync_mode = 1; break; case 'h': default: usage(); break; } } if(out_block_size < MINIMAL_BUF_LENGTH || out_block_size > MAXIMAL_BUF_LENGTH ){ fprintf(stderr, "Output block size wrong value, falling back to default\n"); fprintf(stderr, "Minimal length: %u\n", MINIMAL_BUF_LENGTH); fprintf(stderr, "Maximal length: %u\n", MAXIMAL_BUF_LENGTH); out_block_size = DEFAULT_BUF_LENGTH; } buffer = malloc(out_block_size * sizeof(uint8_t)); if (!dev_given) { dev_index = verbose_device_search("0"); } if (dev_index < 0) { exit(1); } r = rtlsdr_open(&dev, (uint32_t)dev_index); if (r < 0) { fprintf(stderr, "Failed to open rtlsdr device #%d.\n", dev_index); exit(1); } #ifndef _WIN32 sigact.sa_handler = sighandler; sigemptyset(&sigact.sa_mask); sigact.sa_flags = 0; sigaction(SIGINT, &sigact, NULL); sigaction(SIGTERM, &sigact, NULL); sigaction(SIGQUIT, &sigact, NULL); sigaction(SIGPIPE, &sigact, NULL); #else SetConsoleCtrlHandler( (PHANDLER_ROUTINE) sighandler, TRUE ); #endif count = rtlsdr_get_tuner_gains(dev, NULL); fprintf(stderr, "Supported gain values (%d): ", count); count = rtlsdr_get_tuner_gains(dev, gains); for (i = 0; i < count; i++) fprintf(stderr, "%.1f ", gains[i] / 10.0); fprintf(stderr, "\n"); /* Set the sample rate */ verbose_set_sample_rate(dev, samp_rate); if (test_mode == TUNER_BENCHMARK) { tuner_benchmark(); goto exit; } /* Enable test mode */ r = rtlsdr_set_testmode(dev, 1); /* Reset endpoint before we start reading from it (mandatory) */ verbose_reset_buffer(dev); if ((test_mode == PPM_BENCHMARK) && !sync_mode) { fprintf(stderr, "Reporting PPM error measurement every %i seconds...\n", ppm_duration); fprintf(stderr, "Press ^C after a few minutes.\n"); } if (test_mode == NO_BENCHMARK) { fprintf(stderr, "\nInfo: This tool will continuously" " read from the device, and report if\n" "samples get lost. If you observe no " "further output, everything is fine.\n\n"); } if (sync_mode) { fprintf(stderr, "Reading samples in sync mode...\n"); fprintf(stderr, "(Samples are being lost but not reported.)\n"); while (!do_exit) { r = rtlsdr_read_sync(dev, buffer, out_block_size, &n_read); if (r < 0) { fprintf(stderr, "WARNING: sync read failed.\n"); break; } if ((uint32_t)n_read < out_block_size) { fprintf(stderr, "Short read, samples lost, exiting!\n"); break; } underrun_test(buffer, n_read, 1); } } else { fprintf(stderr, "Reading samples in async mode...\n"); r = rtlsdr_read_async(dev, rtlsdr_callback, NULL, 0, out_block_size); } if (do_exit) { fprintf(stderr, "\nUser cancel, exiting...\n"); fprintf(stderr, "Samples per million lost (minimum): %i\n", (int)(1000000L * dropped_samples / total_samples)); } else fprintf(stderr, "\nLibrary error %d, exiting...\n", r); exit: rtlsdr_close(dev); free (buffer); return r >= 0 ? r : -r; }